Scholars have grouped Native Americans based on language, cultures, geographical relationships, and even history with Europeans. These differences explain how there are variations in experiences and therefore variations in drama/theatre. Generalizations often stem over how tribes practice religion. However, for example, the religious beliefs that motivate the Sun Dance drama are different between groups. Another form, storytelling, gives unmistakable characteristics of drama. The Navajo chantways are physically and emotionally intense dramas retelling creation of life. The chantway prepares for weeks as an all-encompassing actor, stage manager, choreographer, director, etc. Shamanistic practices show more personal power and are seen as dramas when the shaman starts to plan the ceremony in advance. Unlike the Sun Dances, Cheyenne Sacred Arrow Ceremonies, and Navajo sings, potlatch is in a more negative light since it demonstrates the idea of socioeconomic hierarchy. On the other hand, some have used it in a way to celebrate coming of age and great strength or beauty. In this way it’s more representational of the family’s ancestral power. One of the most active companies in the 1970s was the Native American Theatre Ensemble alongside the Red Earth Performing Arts and Indian Performing Arts Company. Rollie Riggs (Cherokee) created some notable plays including Green Grow the Lilacs, which eventually became Oklahoma!. Majority recent plays still address events of history and matters of contemporary Indian life.